Per AppleInsider, Apple on Monday provided developers with a second beta of iOS 5.1, with the latest update granting the ability to delete individual photos synced to the iCloud Photo Stream feature.

The latest beta is now available to members of the iOS developer program. Sources familiar with beta 2 said one of the newest additions automatically deletes pictures from Photo Stream when they are deleted from the iPhone.

Currently, pictures taken on an iOS device are automatically synced with the Photo Stream feature of Apple’s iCloud. But if a user deletes a picture from their iPhone, it is not removed from iCloud. Instead, users must unsync their entire photo library in order to remove an uploaded photo.

Those same people said that the latest beta of iOS 5.1 is known as build 9B5127c. Some issues do reportedly remain with the pre-release software, including freezes related to Setup Assistant and the shake-to-shuffle feature in the iOS music player.

iOS 5.1 beta 2 is compatible with the iPhone 4S, iPhone 4, iPhone 3GS, iPad 2, iPad, and third- and fourth-generation iPod touch and stands as an 801MB download. A new beta firmware for the Apple TV was also issued Monday, and allows developers to test iOS 5.1 applications with AirPlay on the set-top box.

The first beta of iOS 5.1 was provided to developers in late November. It included references to a next-generation iPhone, labeled “iPhone5,1,” as well as third-generation iPad models, “iPad3,2” and “iPad3,3.”

Per iLounge, Tekkeon has introduced its new TekCharge MP1580 battery pack for the iPod, iPhone, and other USB-charging devices. The MP1580 offers the ability to charge devices using between two and four AA batteries, and serves as a charging station for rechargeable NiMH or lithium cells. Other features include an inline voltage regulator to ensure safe charging, a built-in USB slot for connecting charging cables, and an external charge indicator.

If you’re traveling to the far east and need to snag an iPhone 4S, things just got a bit easier.

Per MIC Gadget, Chinese regulators have issued the final permit required for Apple to launch the iPhone 4S in the country, with wireless operator China Unicom hoping to begin selling the device by the Christmas and New Year holidays.

A new report claims that the MIIT network permit may actually be for the 8GB iPhone 4, as noted by Penn Olson. Insiders from China Unicom have allegedly stated that the iPhone 4S is still awaiting approval.

According to the report, China’s Ministry of Industry and Information Technology (MIIT) issued the necessary network access permit for the iPhone 4S earlier this week. The certificate remains valid for three years and The permit was believed to have been the last obstacle for Apple.

In response to the news, China Unicom said it expects to launch the device by the end of the month. The carrier reportedly estimates the 16GB iPhone 4S will cost 4,999 yuan (US$786) off contract.

The company revealed in late November that it had already finished preparations for the iPhone 4S and was simply awaiting the final permit from the government.

Financial analysts have indicated that their estimates of 28 million iPhone units shipped in the fourth quarter of calendar 2011 will see a strong upside if Apple manages to launch the iPhone 4S in the world’s most populous country by the end of the quarter. According to Apple, there are already 7,000 points of sale for its smartphone in the country.

As for Greater China, the iPhone 4S arrived in Hong Kong to frenzied crowds in November. The handset is set to launch in Taiwan on Dec. 16. Apple has been on a tear in the region as of late. The company saw record sales of US$4.5 billion there last quarter, making it the company’s second-largest market in terms of revenue.